The Christian church and charity claims so-called 'sexbots' will encourage sex to be considered a commodity to be bought and sold.
Kathryn Taylor, of The Salvation Army's Anti Trafficking and Modern Slavery Unit, said: "'Sexbots' won't fulfil the need for human interaction and for rewarding, loving relationships.
"In the same way that pornography normalises certain behaviours, the availability of 'sexbots' could normalise a distorted power dynamic which devalues the other person involved when transferred to human interactions.
"This could encourage increased objectification of women and children and a lack of respect for their fellow human beings."
Have you seen our newly released consultation document on sex robots yet? Download it at: https://t.co/CZUXYvZv5w pic.twitter.com/tJLqyVqvQ2
— Responsible Robotics (@RespRobotics) July 7, 2017
The Salvation Army spoke out after the Foundation for Responsible Robotics launched its 'Our Sexual Future with Robots' consultation document earlier this week.
The document poses questions including what kind of relationships are possible with robots, whether sexual relationships with robots are acceptable and whether robots could help cut sex crimes.
The Salvation Army fears sex robots could fuel the flames of the prostitution industry and incite traffickers to target more vulnerable women and children in order to meet this rising demand.
The organisation also shot down any suggestion the availability of such technology would reduce the demand for prostitution.
Kathryn Taylor added: "It has been argued that the availability of this technology could reduce demand for women, and even children, in prostitution.
"However, we believe that the more sex is viewed as a commodity - something this technology could certainly encourage - the more likely it is that people will look to purchase other people for sex."